Dentist&#39;s model



W. KH LER July 4, 1933.

DENTI ST S MODEL Filed Nov. 2O

Patented July 4, 14933 i,eiaziie raies WALTER nomine, en MUNIcH, .GERMANY DENTIST S MODEL application inea November 2o, i930, seriai No. vr496,919, ami in eermaiiyseptember-as; 179-30.

My .invention .relates to dentists lmodels, and more particularly tomodels having` an .upper and a lower j aw arrangedgfor` the demonstration of mastication movements andy of abnormal positions of the human lower jaw. The model mayalsobe used in dentistry as a i so-called i articulator for .making .artificial teeth.

It is an object. of my inventiontoprovide .a-model in which the movable jaw may be iXed on'a foundation plate in any desired position. `To this end I mount the mova- -ble jawto slide onthe foundationplate in allv directions and I provide meansfor fixing itin any desiredposition. Preferably'l also .providemeans for varyingthe angular po sition of the movable jaw withrespect to the foundation plate.

In the drawing,` .aliixed tothis specification and forming part -thereof :a model. embody- Fig. S'isa plan .view of the foundation f V`plate, with the jaws removed, and

Figs. 4 and 5 are details. yReferring to the drawing, 1J is the.k foundationl plate, 2 and 3 are uprightsextending upwardly from the plate, l isa pin support ed in the upper ends of the two. uprights, and

5 is theupper j aw which is mounted to-.rocl

`onthepin with itsforled endsfe". "7 tis a 4slide bai` extending between the uprights and "3 in the manner of astayand in'parallel relation to the pin 4. Sisablock which .isinountedfto slide on the-pin. F9 is .a set .screw inthe'block for fixing it onthepiii. 1vlOisal flat cheek onf the inneren'dof. the block .8. ("Fig.; ,5) and 4lliis a correspondingfface on one offthe ends. .6 offthezupper jaw 5. VThe *block 8 is'held'against rotation on the pin. l

by thebar 7,\.andiwhen=it;is movedinto: the

fposition .shown in'fFig. 25 its cheek 10 .locks the upper jaw 5 in the position illustrated in EF1-g. :1.

l123isfthelower jaw whichfis ,alsoiforlred atzitsirean end, and with Iitsforked ends'l?) -pla'te 1. Awhich Vis placed with its openingQQ onthe E28 are held down on the rectangular washer '-23 of thel foundationplate 1 'in Aany desired frame 21,v 27 may be displaced longitudinally and 14: engages the ends of a shaft 16 .which '.projectsfrom a'bracket l5. rlfhe -forled ends 13,14, are secured onthe ends of the shaft '16 rby ineansofpins 17 Vand 18, orother suitable ineens, so that .the shaft 16 rotates in the 555' vbracket' when the lower jaw 12 is rocked. The bracket 15is equipped with a handle 19 which rvprojects .from the model at the left. The

bracket surrounds a pin 2O` on therfoundati on 21 vplate with rounded ends '0 pin-Q0 so' as to surround it with considerable clearance, while the plate is in turn surrounded with some clearance by the bracket 15. 23 is avrectangular washer attlie;hase5 f. ofpin20, and 2li is an annular projectionon thebottom 'face ofthe plate l by which A.it

vis supported on the washer vE23. 25 risa V- i notch or seatgnear therounded inner end `oftheplate 21, and 26V is a corresponding 1710 gnotch in a plate 27 which resembles the plate 21, with a corresponding openingfQS for the y' .reception of the pin Q0. V29 isa pin lwhich is inserted in registering bores: of the z plates 21 and 27. 30 is a washer which isplac-ed .onthe upper plate-917 and 81 isa nutonthe threaded upper eiidof the pin 2() which bears onthewasher 30. y `When thenut 31 is set, the plates21 and position with respect tothe pin 20. At"r the saineftfilme'shaft 16 is clamped in th'cinotches or bearings y25 and 26 of the plates.' The plates 21' and 27 thus Yconstitute a `f-ianiewhich is surrounded by the bracketgl and connected-thereto by the shaft 1G of: thelower When the nut 31 is partly:unscrewedfthe and transversely. As mentioned, the opening 22 and the opening 28 which-registers with the opening` H22, vsurroundythe pin 2() .with considerable .clearance and a 1corresponding freedom of movement, in ,all 4directions is. permitted to the frame 21,27 ,andelso toftheabraclret 15 which is connectedto the rframe'bythe pin 16. ilhile the frameand thef'brackettare displacedfthefree endof the movablefjaw 12 slides on the foundation plate, adjustment being facilitated by the handle 19. By setting the nut 31 the frame 21, 27, and consequently also the jaw 12 are fixed in any given position.

32 is a slide which is fitted in a notch 33 extending lengthwise of the foundation plate 1, 34 is a handle near its outer end and 35 is a set screw for xing saine in any given position, 36 being a slot in the slide for the reception of the screw 35. The slide forms part of the foundation plate 1 kand normally supports the freeend of the lower aw 12 so that the jaw is only displaced in parallel to the foundation plate by the handle V19. 37 is a step or shoulder near the front end of the .slide 32.

When the slide is retracted so that t-he step 37 is moved beyond the outer end of the lower jaw 12, the jaw is free to rock about the axis of its shaft 16 soV that itsy angular position with respect to the foundation plate 1 may be varied. Obviously the nut 31 must be partly unscrewed to permit the shaft 16 to rock in the V-notches 25 and 26 of the frame 21,

r27. By setting the nut 31 the lower jaw 12 isheld in the position imparted to it by the vhandle 19, and at the angle through which it has been rocked about the shaft 16.

' Means for exactly fixing the lower jaw in its normal position maybe 'combined with the slide 32, as will now be described. 33 is a pin near the front end of the slide 32, which Vis adapted to enter a notch 39, and 40 and pending application for patent of the nited States, Serial No. 369,327, filed June 8, 1329, in which I have described jaws in combination with exchangeable gum models and exchangeable teeth adapted tov be inserted inV the models.

I wish it to be understood that I do not desire to be limited to the exact details of construction shown anddescribed, for obperson said foundation plate at the other end,.and

means on said pin for fixing said frame on said plate in any desired position.

2. A ldentists model comprising a foundation plate, a pin on said foundation plate, a frame surrounding said pin with an opening which is larger than said pin, a jaw pivoted to said frame at one end and supported on said foundation plate at the other end, and means on said Apin for fixing said frame on said plate in any desired position.

3. A dentists model comprising a foundation plate, a pin Yon said foundation plate, a frame surrounding said )in with an opening which is larger than said pin, said frame including'two members each having a depression, a shaft inserted in said depressions, said depressions matching and together forming a single seat for said shaft, a jaw secured to said shaft at one end and supported on said foundation plateV at the other end, and means on said pin for clamping said shaft in said depressions and for fixing said frame on said plate in any desired position.

'4. Adentists model comprising' a foundation plate, a pin on said foundation plate, a frame surrounding said pin with an which is larger than said pin, a spaced kapart fromy and connected to said frame, a handle on said bracket, a shaft mounted to rotate in said bracket, a jan1 secured to said shaft at one end and supportedY on said foundation plate at thc other end, means on said frame for clamping said shaft, and means on said pin for setting said clamping means and for fixing said frame on said plate in any desired position.

5. A dcntists model comprising a foundation plate, a pin on said foundation plate, a frame surrounding said pin and adapted to be displaced with respect thereto in all directions, a jaw pivoted to said frame at one end,

l a slide on said foundation plate adapted to i support the other end of said jaw, means on said slide for engaging said jaw and said frame so as to hold said jaw in a definite posiopening A bracket tion, and means for fixing said slide on said p foundation plate.

6. A dentists model comprising a foundation plate, a jaw pivotally mounted on said foundation plate at one end, a slide on said foundation piate adapted to support the other end of said jaw, means on said slide for engaging said jaw so as to hold said jaw in a definite position, and means for fixing said slide on said foundation plate.

frame embracing said pin and being mounted to slide on said foundation plate and adapted to be displaced thereon-in all directions within the limits set by said pin, and means for. fixing said frame on said foundation plate in any position into which it has been displaced. f

8. A dentists model comprising a foundation plate, a' pin on said foundation plate, a frame embracing said pin and surrounding 7. A dentists model comprising a foundation plate, a pin on said foundation plate, a 1"" said pin with a clearance and mounted to slide on said foundation plate and adapted t0v be displaced thereon in all directions within the limits set'by said pin, and means for lixing said frame on said foundation plate in any position into which it has been displaced.

9. A dentists model comprising a foundation plate, a pin on said foundation plate, a frame embracing said pin and being mounted to slide on said foundation plate and adapted to be displaced thereon inall directions within the limits set by said pin, and means on said fixture for fixing said frame on said foundation plate in any position into which it has been displaced.

l0. A dentists model comprising a foundation plate, a pin on said foundation plate, a jaw embracing said pin and being mounted to slide on said foundation plate and adapted' to be displaced thereon in all directions within the Limit set by said pin, vmeans for varying the angular position of said jaw with respect to said foundation plate, and means for fixing said jaw on said plate in any position into which it has been displaced.

1l. A dentists model comprising a foundation plate, a pin on said foundation plate, a frame embracing said pin and being mounted to slide on said foundation plate and adapted 'to be displaced thereon in all directions within the limitsfset by said pin, means for fixing said frame on said foundation 'plate in any position into which it has been displaced, and a jaw pivoted to said frame.

l2. A dentists model comprising a foundation plate, a pin on said foundation plate, a frame embracing saidpin and being mounted to slide on said foundation plate and adapted to be displaced thereon in all directions within the limits set by said pin, means for fixing said frame on said foundation plate in any position into which it has been displaced, and a jaw pivoted to said frame at one end, with its free end bearing on said plate.

13. A dentists model comprising a foundation plate, a pin on said foundation plate, a frame made up of two part-s surrounding said pin with an opening which is-larger than said pin, a shaft inserted between the two parts of said divided frame and extending at right angles to said pin, a jaw secured to said shaft at oneend, means on said pin for clamping down said divided frame on said foundation plate, at the same time clamping said shaft betweenthe two parts of the divided frame, and a slide on said foundation plate adapted to support the other end of said jaw.

14. A dentists model comprising a foundation plate, a pin on said foundation plate, a` frame made up of two parts surrounding said pin with an opening which is larger than said pin, a shaft inserted between the two parts of said divided frame and extending at right angles to said pin, a stepped j aw secured to said shaft at one end, means on said pin for clamping down said divided frame on said foundation plate, at the same time clamping said shaft between the two parts of the divided frame, and a slide on said found ation plate adapted to support the other end of said stepped jaw.

l5. A dentists model comprising a foundation plate, an upper jaw pivotally mounted on said foundation plate, means for fixing said upper jaw 'in a given angular position with respect to said foundation plate, a pin on said foundation plate, a lower jaw yembracing said pin and mounted to slide on said foundation plate in all directions within the limits set by said pin, and means. for fixing said lower jaw on said foundation plate in any position into which it has been moved.

16. A dentists model comprising a foundation plate, a pivot supported above said foundation plate, anupper jaw mounted to rock about said pivot, a block mounted to slide on said pivot, means for holding saidy block against rotation, a cheek on said block and a corresponding cheek on said upper jaw, said cheek being so designed as to hold said upper jaw against rotation on said pin when engaged, a pin on said foundation plate, a lower jaw embracing said pin and mounted to slide on said foundation plate in all directions within the limits set by said pin, and means for fixing said lower jaw on said foundation plate in any position into which itr has been moved. n

ln testimony whereof l ax my signature.

WALTER KHLER. 

